Clamping and locking means for milk-can covers



l. B.CONOVER. CLAMPING AND LOCKING MEANS FOR MILK CAN COVERS.

APPLICATION FILED 020.7. 1916- Pat nted Dec. 7,1920.-

gmuamfoz 2 SHEETS-SHEET 1- J. B. CONOVER. CLAMPING AND LOCKING MEANS FORMILK CAN COVERS.

1,361,141, Patented Dec. 7,1920.

- 2 SHEETSSHEET 2- APPLlCATlON FILED DEC. 7 1916.

UNITED STATES PATENT OFFICE.

JACOB B. CONOVER, 0F JERSEY CITY, NEW JERSEY.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed December 7, 1916. Serial No. 135,592.

T 0 all whom it may concern:

Be it known that I, JACOB B. CONOVER, a citizen of the United States,residing at Jersey City, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in Clampingand Looking Means for Milk-Can Covers, of which the following is aspecification, reference being had therein to the accompanying drawings,forming part thereof.

The objec s of the invention are facility and economy of manufacture,and the production of a device which shall be rugged, durable, tight,reliable and conveniently operated.

In the accompanying drawings:

Figures 1, 2 and 3 show one embodiment of the invention, and Figs. 4, 5and 6 illustrate another construction in which the same genericinvention may be embodied.

Fig. 1 is a plan view of the neck and'cover of a milk can showing thecover-clamping means at one side in section on the plane 1, 1, of Figs.2 and 3, which is the horizontal plane of the yoke pivots 4 the partsbeing represented in clamping positions.

Fig. 2 is a partly sectional front elevation of the upper end of the canshown in Fig. 1, the section plane being indicated at 2, 2, of Fig. 1.

Fig. 3 is a partly sectional left elevation of the upper end of the canshown in Figs. 1 and 2, the section plane being indicated at 3, 3, ofFigs. 1 and 2.

Fig. 4 is a plan view of the neck and cover of a milk can showing thecover-clamping means at one side in section on the plane 4, 4, of Figs.5 and 6, which is the horizontal plane of the yoke pivots 4, the partsbeing represented in clamping positions.

Fig. 5 is a partly sectional front elevation of the upper end of the canshown in Fig. 4, the section plane being indicated at 5, 5, of Fig. 4.

Fig. 6 is a partly sectional left elevation of the upper end of the canshown in Figs. 4 and 5, the section plane being indicated at 6, 6, ofFigs. 4 and 5.

In the construction of Figs. 1, 2 and 3, the can cover 8 fits like a capover the can neck 9 The cover is formed of sheet metal and recessed atits inside annular corner to re-' ceive a gasket 12 which lies upon theedge of the can neck. The sheet-metal cylindrical rim of the cover isreinforced by a relatively heavy outside ring 5 perforated atdiametrically opposite points to receive the pivotal studs 4 projectinginwardly from the ends of the clamping-and-locking bailshaped yoke 3Projecting outwardly from the ends of the yoke or bail 3 are oblongclamping bosses or cams 6 whose centers lie in the projected axis of thepivot studs 4 and Whose major dimensions are normal to the plane of thebail, so that when the bail is swung into the plane of the can mouth,the clamping cams will have their major radii (with respect to theirpivotal axis) vertically disposed to engage the inward overhang of theclamping ears 7 riveted 011 the neck ring 9". The under sides of theoverhang walls of these clamping ears are recessed to receive the beadsl3 formed along the shorter edges of the clamping cams, so that theseating of these beads in said recesses will tend to resist lateraldisplacement of the ears. The vertical stopribs 14 of the oppositeclamping ears are disposed on opposite sides of the diametric line whichis the pivotal axis of the yoke when placed in clamping position, sothat the can cover may be placed over the mouth of the can with itsclamping bail or yoke in the vertical plane and then rotated about avertical axis until the stop-ribs arrest the clamping cams in positionto effect their clamping engagement with the ears when the yoke is swungeither way into the horizontal plane. A locking ear 11 is riveted to theneck ring in position to arrest the middle of the clamping yoke in thehorizontal plane, and this ear and the yoke are preforated in registerso that the yoke may be adlocked or conveniently tied to the ear. n theconstruction shown in Figs. 4 to 6 inclusive, the clamping yoke 8 ipivoted in internal enlargements 5 formed in the inner annular corner ofthe cast cover 8 whose cylindrical portion fits within the neck of thecan and has an outer integral flange against which the gasket 12 isseated in position to effect a sealing engagement with the upper edge ofthe can neck. The clamping cams are semi-circular and engage theoverhang of the clamping ears 7 when the clamping yoke is swung into thehorizontal plane on one side of the cover, and are unclamped when theyoke is swung one hundred and eighty degrees into the same plane on theopposite side of the cover.

vices on the yoke, said clamping ears and devices beingadapted to coactfor clamping the cover on the can when the yoke is swung towardhorizontal position on one side of the cover.

2. Covering means for cans with cylin drical necks, comprising a coverwith a cylindrical rim, clamping ears secured to opposite sides of thecan in positions outside the cover rim, a bail-shaped yoke spanning thecover rim with its ends disposed between said rim and the oppositeclamp- 1ng ears and pivoted to said rim, and clamping devlces on theends of the yoke,

said clamping devices and the clamping,

ears being adapted to clamp the cover. in position when the yoke isswung toward horizontal position on one side of the cover.

3. Covering means for cans withcylindrical necks, comprising a coverwith a cylindrical rim, clamping ears secured to opposite sides of thecan neck in positions outsidethe cover rim, a yoke spanning the coverrim with inwardly projecting pivotal studs entering the rim and saidyoke hav ing clamping devices projecting outward toward the clampingears, said clamping devices and ears being designed to clamp the coveron the can neck when the yoke is swung toward horizontal position on oneside of the cover.

4. Covering means for cans with cylindrical necks, comprising a coverwith a cylindrical rim embracing the can neck, clamping ears secured'to'opposite sides of the can in positions outside the cover rim, a bailspanning the cover rim and pivoted thereto, and clamping devices onsaidbail, said clamping ears 7 and clamping devices being designed andadapted to clamp the cover on the can neck when the bail is swung towardclamping position on one side of the cover.

5 Covering means for cans with cylindrical necks, comprising asheet-metal cover with a cylindrical rim embracing the can neck and areinforcing ring on said rim, clamping ears secured to opposite sides ofthe can in positionsoutside the cover rim and its reinforcing ring, abail-formed yoke spanning the cover-reinforcing ring and pivotedthereto, and clamping devices on said yoke, said clamping ears andclamping devices being constructed and arranged to coact to clamp thecover on the can neck when the yoke is swung toward clamping position onone side of the cover.

In testimony whereof I have affixed my signature.

JACOB B. CONOVER.

